In Maine, a teenager serves ice cream at a Dairy Queen for the summer. But data show teens' participation in the labor force is on the decline, and it has been for decades. Jill Brady/Press Herald via Getty Images hide caption

More companies are finding it difficult to hire skilled employees, pressuring employers to rethink their hiring strategies. Wilfredo Lee/AP hide caption

Gas prices are expected to increase during summer months, but a recent OPEC decision could bring prices down as soon as this fall. Gerry Broome/AP hide caption

Trader John Panin works on the floor of the New York Stock Exchange on Tuesday. U.S. stock markets fell as U.S.-China trade tensions grew. Richard Drew/AP hide caption

The Securities and Exchange Commission voted to allow investment firms, starting in 2021, to stop creating and mailing paper mutual fund reports to investors. Andrew Harnik/AP hide caption

A child plays with a mobile phone while riding in a New York subway in December. Two major Apple investors urged the iPhone maker to take action to curb growing smartphone use among children. Mark Lennihan/AP hide caption

A volunteer cleans up needles used for drug injection that were found at a homeless encampment in Everett, Wash., in November. Respondents in a Federal Reserve survey who knew someone who had been addicted to opioids were less likely to give the economy a favorable rating. Ted S. Warren/AP hide caption